#include "widget.h"
#include "ui_widget.h"
#include <QTimer>
Widget::Widget(QWidget *parent)
    : QWidget(parent)
    , ui(new Ui::Widget)
{
    ui->setupUi(this);
    ui->lcdNumber->display(10);
    timer = new QTimer(this);
    connect(timer, &QTimer::timeout, this, &Widget::handle);
    timer->start(1000);
}

Widget::~Widget()
{
    delete ui;
}

void Widget::handle()
{
    int value = ui->lcdNumber->intValue();
    if(value == 0)
        timer->stop();
    else
        ui->lcdNumber->display(value - 1);
}

